Molar mass of B > Molar Mass of A
Exactly equal amounts (in moles) of gas A and gas B are combined in a 1-L container at room temperature. Gas B has a molar mass that is twice that of gas A.
Which of the following is true for the mixture of gases?
a) The molecules of gas B have greater kinetic energy than those of gas A.
b) Gas B has a greater partial pressure than gas A.
c) Gas B makes a greater contribution to the average density of the mixture than gas A.
d) The molecules of gas B have a greater average velocity than those of gas A.
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